Tree Removal / Care
While the perceived risk of death by falling trees (a part of the “tree risk” complex) is influenced by media and often hyped (the objective risk has been reported to be close to 1 : 10.000.000, almost as low as death by lightning), singular events have encouraged a “proactive” stance so that even lightly damaged trees are likely to be removed in urban and public traffic surroundings. As a tree ages and nears the end of its safe useful life expectancy (SULE), it’s perceived amenity value is decreased greatly. A risk assessment normally carried out by local council’s arborist to determine the best course of action. As with all public green spaces, trees in green urban spaces and their careful conservation is sometimes in conflict with aggressive urban development even though it is often understood how urban trees contribute to liveability of suburbs and cities both objectively (reduction of urban heat island effect, etc.) and subjectively. Tree planting programs implemented by a growing number of cities, local councils and organizations is mitigating the losses and in most cases increasing the number of trees in suburbia. Programs include the planting of 2 trees for every 1 tree removed, while some councils are paying land owners to keep trees instead of removing them for farming or construction.
Tree care is the application of arboricultural methods like pruning, trimming, and felling/thinning in built environments. Road verge, greenways, backyard and park woody vegetation are at the center of attention for the tree care industry. Landscape architecture and urban forestry also set high demands on professional tree care. High safety standards against the dangers of tree care have helped the industry evolve. Especially felling in space-limited environments poses significant risks: the vicinity of power or telephone lines, insufficient protective gear (against falling dead wood, chainsaw wounds, etc.) and narrow felling zones with endangered nearby buildings, parking cars, etc.. The required equipment and experience usually transcends private means and is often considered too costly as a permanent part of the public infrastructure. In singular cases, traditional tools like handsaws may suffice, but large-scale tree care usually calls for heavy machinery like cranes, bucket trucks,harvesters, and woodchippers.
Road side trees are especially prone to biotic stress by exhaust fumes, toxic road debris, soil compaction, and drought which makes them susceptible to fungal infections and various plant pests. When tree removal is not an option, because of road ecologyconsiderations, the main challenge is to achieve road safety (visibility of road signs, blockage-free lanes, etc.) while maintaining tree health.
Oroville is the county seat of Butte County, California, United States. The population was 15,506 at the 2010 census, up from 13,004 in the 2000 census. Oroville is considered the gateway to Lake Oroville and Feather River recreational areas. The city of Oroville has recently annexed two locations in South Oroville, areas A and B, which have a combined population of 2,725 people. The U.S. Census Bureau estimated the population of the city to be 17,996 as of January 1, 2016, up 1,908 people or 11.9 percent since 2010. The Berry Creek Rancheria of Maidu Indians of California is headquartered here.
Oroville is located off of State Route 70, and is in close proximity to State Route 99, which connects Butte County with Interstate 5. Chico, California is located about 25 minutes north of the city, and Sacramento lies about an hour south.
Oroville is situated at the base of the foothills on the banks of the Feather River where it flows out of the Sierra Nevada onto the flat floor of the Sacramento Valley. It was established as the head of navigation on the Feather River to supply gold miners during the California Gold Rush.
The town was originally called “Ophir City”, but the name was changed to Oroville when the first post office opened in 1854 (“oro” is “gold” in Spanish). The City Of Oroville was incorporated on January 3, 1906.
Gold was found at Bidwell Bar, one of the first gold mining sites in California, bringing thousands of prospectors to the Oroville area seeking riches. Now inundated by the waters of enormous Lake Oroville, which was filled in 1968, Bidwell Bar is memorialized by the Bidwell Bar Bridge, an original remnant from the area and the first suspension bridge in California (California Historical Landmark #314). In the early 20th century the Western Pacific Railroad completed construction of the all-weather Feather River Canyon route through the Sierra Nevadas giving it the nickname of “The Feather River Route”. Oroville would serve as an important stop for the famous California Zephyr during its 20-year run. In 1983, this became a part of the Union Pacific Railroad as their Feather River Canyon Subdivision. A major highway, State Route 70, roughly parallels the railroad line winding through the canyon.